What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCBoth

LOINC Code 5118-5: C. neoformans Ag LA (CSF) [Titer]

Name: LOINC Code 5118-5: C. neoformans Ag LA (CSF) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:35.011Z

5118-5 is a LOINC code used to identify C. neoformans Ag LA (CSF) [Titer] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Cryptococcus neoformans Ag. It is commonly used with the system or sample type CSF.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Cryptococcus neoformans Ag. It is commonly used with the system or sample type CSF.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: DEPRECATED
Order vs observation: Both
Method: LA

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Deprecated Cryptococcus neoformans Ag [Titer] in Cerebral spinal fluid by Latex agglutination
Cryptococcus neoformans Ag
Antigen; Antigens; C neoform; C neoformans; Cerebral spinal fluid; Cerebrospinal Fl; Crypt; Crypto; Cryptococcal; Cryptococcosis; Cryptococcosus; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; LAT; Latex agglutination; Microbiology; Neuro; Neurology; Point in time; QNT; Quan; Quant; Quantitative; Random; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Titer; Titered; Titre; Ttr

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

C. neoformans Ag LA (CSF) [Titer]Deprecated Cryptococcus neoformans Ag [Titer] in Cerebral spinal fluid by Latex agglutinationDeprecated C neoform Ag Titr CSF LACryptococcus neoformans AgMICROCryptococcus neoformans antigen, Spinal fluidTitr

Frequently asked questions

Code details

Code5118-5

SystemLOINC

Display nameC. neoformans Ag LA (CSF) [Titer]

DescriptionCryptococcus neoformans Ag

Short nameDeprecated C neoform Ag Titr CSF LA

ComponentCryptococcus neoformans Ag

PropertyTitr

TimingPt

System (specimen)CSF

ScaleQn

MethodLA

ClassMICRO

Example unitstiter

StatusDEPRECATED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.70

Consumer names

Cryptococcus neoformans antigen, Spinal fluid

Part names

Cryptococcus neoformans AgTitrPtCSFQnLATiterPoint in time (spot)Cerebral spinal fluidLatex agglutination

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.